A Study on the Side Shear Developed during Pullout of Suction Pile in Clays using 3D Numerical Analysis
3차원 수치해석을 이용한 점토지반에 설치된 석션파일 인발 시 발현되는 전단응력에 관한 연구

Myungjae Lee, Heejung Youn
2014 Journal of the Korean geoenvironmental society  
This paper presents the pullout behavior of suction pile using finite difference method; and the commercial software, FLAC3D, was employed for the numerical analyses. The ultimate pullout capacity of suction pile was predicted using conventional equations, and the results were compared with the results from numerical analyses with varying pile diameter, pile length, and the undrained shear strength of clays. Based on the results from 24 analyses, it was found that the failure pattern depends
more » ... pattern depends not only on the drainage condition of suction pile, but also on the pile dimensions and the material properties of surrounding soils. The developed side shear (DSS) along the internal surface of the suction pile was collected from numerical analyses, which was used to classify the failure type between sliding failure and tensile failure. Regardless of the external DSS, the high internal DSS tends to result in sliding failure in the numerical analyses, which conforms well to the estimation from conventional equations.
doi:10.14481/jkges.2014.15.2.59 fatcat:3r4grreuafcf7mtjmq6hfqcudy